Advanced compensation technologies for large‐sized UHD OLED TVs

Takasugi, Shinji; Shin, Hong-Jae; Chang, Min-Kyu; Ko, Sam-Min; Park, Hyosik; Lee, Jeong-Pyo; Kim, Han-Seop; Oh, Chang‐Ho

doi:10.1002/jsid.442

Cited by 25 publications

(19 citation statements)

References 13 publications

(17 reference statements)

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“…Our new technology allows adding RGB data to RGBW data to utilize the four subpixels at once to emit a higher luminance as shown in Figure 4. Our conventional design uses the white subpixel as much as possible and one of the red, green, and blue subpixels is always turned off [7]. This time we can add RGB data to without increasing the white subpixel data voltage.…”

Section: High Image Quality Oled Tvsmentioning

confidence: 99%

45-2: Advanced OLED Display Technologies for Large-Size Semi-Flexible TVs

Shin¹,

Park²,

Takasugi³

et al. 2016

SID Symposium Digest of Technical Papers

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In this paper, we present advanced OLED display technologies for large-size semi-flexible TVs, including a coplanar TFT backplane, a high-performance RGBW structure, compensation technologies and a high dynamic range technology for enhancing image qualities. By using them we have developed various displays and TVs such as curved, transparent, dual plate, and semi-flexible display applications. Currently we concentrate on technologies for premium displays and cost competitiveness for UHD OLED TVs.

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Section: High Image Quality Oled Tvsmentioning

confidence: 99%

45-2: Advanced OLED Display Technologies for Large-Size Semi-Flexible TVs

Shin¹,

Park²,

Takasugi³

et al. 2016

SID Symposium Digest of Technical Papers

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“…One category is the compensation techniques inside the pixel circuits, which typically employs modified pixel topologies. By making the gate-to-source voltage (VGS) of the driving TFT selfadjusted [4] or adding threshold voltage (VT) to the programming voltage (Vprogram) [5], the current trickling through the OLED in the pixel is made to be independent of the threshold voltage variation of driving TFTs. The brightness of OLED is therefore maintained uniform.…”

Section: Introductionmentioning

confidence: 99%

P‐39: A 1.05% Sensing Error Current Comparator for AMOLED Displays with External Compensation

Bai

Lam

et al. 2020

Symp Digest of Tech Papers

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External compensation is an effective scheme to adapt the threshold voltage variations of the driving Thin-Film Transistors (TFTs) and the deterioration of the Organic Light-Emitting Diodes (OLEDs) in pixel circuits of Active-Matrix Organic Light-Emitting Diode (AMOLED) display systems. In this paper, an accurate current comparator is proposed to sense the difference between the current trickling through the OLED and the reference current, so that the deterioration and variations of TFTs and OLEDs in the AMOLED pixel circuits can be detected and compensated effectively. The proposed current comparator is demonstrated in a source driver chip for AMOLED panel with external compensation and fabricated in a 0.25-μm high-voltage CMOS technology. The sensing accuracy of the proposed current comparator is less than 5.3 nA by chip measurement with 500 nA reference current. Furthermore, the sensing error of the proposed current comparator is lower than 1.05%.

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“…The internet of things, in which flat panel display (FPD) is utilized as an exchange platform of information, is useful in various applications, including medical health, artificial intelligence, cloud computing and big data [1]. Due to its fast response time, wide viewing, high contrast and low power consumption, active matrix organic light-emitting diode (AMOLED) has been proposed as a promising candidate for the development of next generation FPD [2]. However, it is challengeable for AMOLED displays to achieve the aim of high resolution (8K) and large size (>65inch), which is necessary for the development of internet of things.…”

Section: Introductionmentioning

confidence: 99%

67‐1: Invited Paper: Design of an Advanced Bottom‐emission AMOLED Display for TVs with High‐PPI and Large Size

Wu¹,

Xue²,

Han³

et al. 2019

Symp Digest of Tech Papers

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Top-gate typed amorphous-indium-gallium-zinc-oxide (a-IGZO) thin-film-transistors (TFTs) and a technologically advanced transparent storage capacitance structure have been successfully employed in pixel circuits. The design procedure was systematically studied. Eventually, a 15-inch gate-driver-on-array (GOA) drived active matrix organic light-emitting diode (AMOLED) display was demonstrated with a high resolution of 147 ppi.

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Advanced compensation technologies for large‐sized UHD OLED TVs

Cited by 25 publications

References 13 publications

45-2: Advanced OLED Display Technologies for Large-Size Semi-Flexible TVs

45-2: Advanced OLED Display Technologies for Large-Size Semi-Flexible TVs

P‐39: A 1.05% Sensing Error Current Comparator for AMOLED Displays with External Compensation

67‐1: Invited Paper: Design of an Advanced Bottom‐emission AMOLED Display for TVs with High‐PPI and Large Size

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